Dear Sir or Madame, We are currently developing an application where the current consumption is very limited. We are using a "STM32L4S5VIT" Especially at the beginning( Boot process) the current consumption is very high.

[JBeez.1]

What are the possibilities t reduce the current cosumption at the beginning. Can you give me some information about basic mechanisms to throttle the required power especially in the boot process. Is there a documentation available regarding to this topic?

Thank you very much for your reply.

Best regards,

Johannes

[Uwe Bonnes]

What is the problem during your programm setup? High current or energy (current * time for setup) ? In the first case, switch to a lower frequency early in the setup. This will run longer, but with less current.

[Tesla DeLorean]

Identify where the peak consumption is occuring, ie have waypoints where you signal via GPIOs and plot that against the current consumption, that way you'll have a profile from which areas to focus on.

Initial clock sources

Starting different clock sources

Waiting for sources and PLLs to lock

Initializing, clearing and copying statics

[Ozone]

> Especially at the beginning( Boot process) the current consumption is very high.

This is a relative statement.

How high is the current/power consumption, and what do you expect to see ?

Have you checked the datasheet ?

It specifies average currents for many operation modes, clock frequencies and environment temperatures.